Inventor · disambiguated record
Duck Sik Park
Also filed as: PARK DUCK SIK
10 granted patents·4 pending applications·9 citations·filing 2016–2025
80Inventor score
Files withKYUNGDONG NAVIEN CO LTD14
Top patents by PatentIndex Score
14 records- 0193US11585572B2Heat exchanger unit and condensing boiler using the sameKYUNGDONG NAVIEN CO LTD·Filed 2019·Granted Feb 21, 2023·9 cites·22 claims
- 0284US12331959B2Heat exchanger unitKYUNGDONG NAVIEN CO LTD·Filed 2023·Granted Jun 17, 2025·0 cites·19 claims
- 0384US2025277602A1Heat exchanger unitKYUNGDONG NAVIEN CO LTD·Filed 2025·Application pending·0 cites
- 0479US11879666B2Heat exchanger unitKYUNGDONG NAVIEN CO LTD·Filed 2022·Granted Jan 23, 2024·0 cites·13 claims
- 0579US11835262B2Heat exchanger unitKYUNGDONG NAVIEN CO LTD·Filed 2022·Granted Dec 5, 2023·0 cites·19 claims
- 0679US11835261B2Heat exchanger unitKYUNGDONG NAVIEN CO LTD·Filed 2022·Granted Dec 5, 2023·0 cites·20 claims
- 0769US2022178623A1Air heating apparatusKYUNGDONG NAVIEN CO LTD·Filed 2021·Application pending·0 cites
- 0865US12241641B2Air heating apparatusKYUNGDONG NAVIEN CO LTD·Filed 2021·Granted Mar 4, 2025·0 cites·20 claims
- 0963US11976819B2Flue pipe separation sensing apparatus and boiler including the sameKYUNGDONG NAVIEN CO LTD·Filed 2021·Granted May 7, 2024·0 cites·15 claims
- 1056US11320173B2Smoke tube boilerKYUNGDONG NAVIEN CO LTD·Filed 2017·Granted May 3, 2022·0 cites·28 claims
- 1153US2022178553A1Air heating apparatusKYUNGDONG NAVIEN CO LTD·Filed 2021·Application pending·0 cites
- 1250US2022082298A1Water heating device and method for manufacturing smoke tube for water heating deviceKYUNGDONG NAVIEN CO LTD·Filed 2021·Application pending·0 cites
- 1348US11306943B2Tube assembly for tubular heat exchanger, and tubular heat exchanger comprising sameKYUNGDONG NAVIEN CO LTD·Filed 2017·Granted Apr 19, 2022·0 cites·16 claims
- 1440US10281149B2Reverse flow prevention apparatus for common exhaust flue and combustion apparatus having sameKYUNGDONG NAVIEN CO LTD·Filed 2016·Granted May 7, 2019·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →